From 083f0b5a7ec3a297e9e5c122c0413d5084ad27ab Mon Sep 17 00:00:00 2001 From: Anna Zaks Date: Tue, 21 Jun 2011 17:18:15 +0000 Subject: Add support for sadd.with.overflow and uadd.with.overflow intrinsics to the CBackend by emitting definitions for each intrinsic that occurs in the module. llvm-svn: 133522 --- .../CodeGen/CBackend/2011-06-08-addWithOverflow.ll | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 llvm/test/CodeGen/CBackend/2011-06-08-addWithOverflow.ll (limited to 'llvm/test') diff --git a/llvm/test/CodeGen/CBackend/2011-06-08-addWithOverflow.ll b/llvm/test/CodeGen/CBackend/2011-06-08-addWithOverflow.ll new file mode 100644 index 00000000000..0ae480dcfdb --- /dev/null +++ b/llvm/test/CodeGen/CBackend/2011-06-08-addWithOverflow.ll @@ -0,0 +1,35 @@ +; RUN: llc < %s -march=c +; Check that uadd and sadd with overflow are handled by C Backend. + +%0 = type { i32, i1 } ; type %0 + +define i1 @func1(i32 zeroext %v1, i32 zeroext %v2) nounwind { +entry: + %t = call %0 @llvm.uadd.with.overflow.i32(i32 %v1, i32 %v2) ; <%0> [#uses=1] + %obit = extractvalue %0 %t, 1 ; [#uses=1] + br i1 %obit, label %carry, label %normal + +normal: ; preds = %entry + ret i1 true + +carry: ; preds = %entry + ret i1 false +} + +define i1 @func2(i32 signext %v1, i32 signext %v2) nounwind { +entry: + %t = call %0 @llvm.sadd.with.overflow.i32(i32 %v1, i32 %v2) ; <%0> [#uses=1] + %obit = extractvalue %0 %t, 1 ; [#uses=1] + br i1 %obit, label %carry, label %normal + +normal: ; preds = %entry + ret i1 true + +carry: ; preds = %entry + ret i1 false +} + +declare %0 @llvm.sadd.with.overflow.i32(i32, i32) nounwind + +declare %0 @llvm.uadd.with.overflow.i32(i32, i32) nounwind + -- cgit v1.2.3